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Table 1 Mechanical properties of healing tendons. Strain at 100 N for one year is calculated from regression line from all measurements. (Units: cm2, MPa, N/0.1 mm, % per 100 N)

From: Mechanical properties during healing of Achilles tendon ruptures to predict final outcome: A pilot Roentgen stereophotogrammetric analysis in 10 patients

  6 weeks 12 weeks 18 weeks 1 year
  min med max mean min med max mean min med max mean min med max mean
Transv area 0.9 1.5 2.8 1.7 1.3 2.7 3.4 2.6 1.5 3.2 4.2 3.0 1.8 2.3 2.9 2.3
Modulus 28 85 130 76 56 95 340 130 60 110 440 170 240 310 1000 410
Stiffness 11 21 36 22 19 43 103 55 29 63 207 81 68 134 319 143
Strain/force 0.55 0.90 1.47 0.97 0.16 0.40 0.78 0.41 0.09 0.32 0.46 0.27 0.04 0.14 0.20 0.14